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CREATE TABLE Plane
(
	regno     VARCHAR(8),
	make      VARCHAR(10),
	model     VARCHAR(10),
        owner     VARCHAR(10) NOT NULL,
        name      VARCHAR(30),
	CONSTRAINT Plane_FK FOREIGN KEY (make,model) REFERENCES Planemodel (varchar(10), varchar(10)),
	CONSTRAINT Plane_PK PRIMARY KEY (regno)
);

I am trying to make "make" and "model" 2 foreign references that occur in Planemodel. Both are varchar(10)